Method of treating coiled material



June 8, 1937. E. T. L ORIG METHOD OF TREATING COILED MATERIAL Filed Feb. 19, 1934 Sheets-Sheet 1 $5 W a Q June 8, 1937. E. T. LORIG METHOD OF TREATING COILED MATERIAL Filed Feb. 19, 1934 2 Sheets-Sheet 2 Patented June 8, 1937 2,083,517 IMETHOD 0F TREATING COILED MATERIAL Edwin r. Lorig, Gary, ma, assignor to American Sheet and Tin Plate Company, a corporation of New Jersey Application February 19, 1934, Serial No. 712,088

1 Claim. (01. 148-8) f This invention relates to a method of treating coiled material, and more particularly to the pickling, washing and oiling of coiled metal strip, although not limited thereto.

In the manufacture of coiled metallic strip, for numerous commercial purposes, billets are greatly reduced by first rolling in a strip mill until it has acquired a very substantial length, usually over several hundred feet. The long strip material is then coiled and conveyed to a plurality of greatly elongated vats wherein they are unrolled and made to travel through pickling, washing and oiling solutions.

The step of pickling being a very important one, and therefore not to be dispensed with, considerable trouble must be taken and a great deal of time consumed in the handling incident to the uncoiling, treating and recoiling of the material prior to its introduction to subsequent processing apparatus; for instance, a cold reduction unit, wherein it acquires a finished surface.

One object of the present invention is the provision of a'novel method of pickling, washing and oiling coiled material in such manner as to obviate the necessity of uncoiling it.

Another object is to provide a novel method and apparatus of the class described which provides for pickling coiled material without the necessity of uncoiling it and immersing it in the usual greatly elongated and remotely situated vats, and the incidental troublesome transportation thereto and therefrom.

These and further objects will be apparent after referring to the drawings, in which:

Figure 1 is a plan of the apparatus of the invention.

Figure 2 is a side elevation thereof.

Figure 3 is a sectional view on the line III-III of Fig. 1.

Figure 4 is a fragmentary sectional view of a modified form of the invention.

Referring more particularly to the drawings, the letters A, B, and C designate vats containing pickling, washing and oiling solutions, respectively.

A pair of continuous rails 2 are made to ex-' tend across upper and open ends of the vats A,

B, and C and in spaced relationship.

Each of the vats A, B, and C is provided with a pair of rolls 3 and I which are journaled transversely of the rails I. The rolls 3 and l are-each provided on their ends with a sprocket i and 5, respectively, which are connected together by means ofachainl. Anendlessbeltlispas'sed around each of the rolls 3 and 4 and made to extend down into the vats A, B, and C. A roll 9 is disposed between each of the endless belts 8 in contaet with its inner surfaces and heldagainst lateral movement by means of guides III on either side of the. vats.

In practice, the rolls 9 maintain the belt 8 relatively taut, but out of contact with the bottoms of the vats.

A motor I! is mounted on the upper end of each of the vats A, B, and C and drives a gear reduction unit I, having a driven sprocket i5,

l0 until the lower convolutions of the coiled material are in contact with the upper and outer surface of the, endless belt 8.

Due to the loose winding of the strip material 22 on the mandrel, 'or pipe 2l,-and the fact that it rests against the upper surface of the endless belt 8, which in turn rests on the roll 9, the upper, or remote, convolutions of the coiled strip material will expand, or open in such manner as to become out of contact with the next adjacent and a chain l6 which drives a sprocket I 'l on an convolutions, .as represented in the drawings at 22'. Thus, the upper convolutions of the coil are radially and progressively separated by virtue of its lower portion being held in close coniinement on the major portion of the lower half oi its periphery by the endless belt 8.

In operation, a suitable overhead conveying means is utilized to bring the mandrel 2| and coiled strip 22, over the pickling-vat A.

The mandrel 2| is lowered with its ends between the guides it until the coil rests upon the upper portion of the endless belt 8, which permits of the coil being completely submerged in the pickling solution; The motor I2 is operated in such manner as to rotate the roll 4 which will, in turn, cause movement of the endless belt 8 and the consequent rotation of the 001122. This will cause successive portions of its surfaces to be exposed to the pickling solution. This operation.

is continued until the shaft I! on the roll I causes the limit switch 28 to stop, and the commencement of the reverse directionpi' rotation of the shaft of the motor- II; The operation is t then continued until the coil is completely pickled.

After pickling, the overhead conveyer men+ tioned is utilized to remove the mandrel 2i and its 'coil to the adjacent washing and oiling vats B and C, respectively, where the same type of apparatus causes the'coil to rotate in the manner described with the consequent complete treatment of the entire surfaces of the strip by the various liquids.

After the coil is thoroughly oiled in the vet C.

. it is removed in .a condition to be subsequently the vat and closely adjacent the upper and sepa-' ratededgesof the coilsinsuchmanner iistobe in alinement therewith. A tube 2| is connected to the nozzle 24 to supply it with liquid.

ideas" While I have disclosed several'specificembodi:

melats of my invention, it will be understood that I do not wish to be limited thereto, since various modifications may be developed by those skilled in the art without departing from the scope of my invention, as defined in the appended claim.

I claim: The method of treating a loose coil of metal with a liquid which includes the steps of immersing the coil entirely in abody of' treating liquid, applying directly opposedconflning mechanical pressures from the interior and exterior of said coil to coniinea relatively small area of the convolutions of said coil between said pres- ,sures. positively rotating said cell to continually bring successive areas between said confining pressures while permitting the convolutions of .the areas moving from between said confining pressures to expand and separate one from the other due to the inherent resiliency of the coiled metal, whereby the treating liquid is forced to wash over the surfaces of the convolutions oi coiled metal by the movement of the convolutions of the coiled metal toward and away from each other.

EDWIN T. 10310. a 

